Prints issued outside of the UK replace the original instrumental score played during the opening title/credits with the song "The Night Caller" (the film's original title) composed by Albert Hague.
This was a British production originally titled "The Night Caller." When it was released in the United States, the title was changed to the much more lurid "Blood Beast from Outer Space."
Night Caller from Outer Space, also known as simply The Night Caller (1965) or Blood Beast from Outer Space, is a British 1965 science fiction film directed by John Gilling. It is based on Frank Crisp's novel The Night Callers.